2019 Australian Lunar Year of the Pig. The Australian Lunar Bullion Coin Series II reaches its finale in 2019 with depictions of the ultimate animal from the 12-year lunar calendar. The most popular one-ounce version in the series has a limited annual mintage of only 30,000 pieces, giving the coin a considerable collector’s premium in the secondary market.The Year of the Pig gold coin contains 99.99% pure gold and is produced with a special minting technique that ensures the coin is in proof-like condition, meaning it has exceptionally shiny and mat surfaces coupled with the richest of detail. This bullion coin is truly a piece of breathtaking gold art suitable for collectors with an eye for beauty and those who wish to give their loved ones something really memorable and special.